When you specify the CHISQ option in the TABLES statement, PROC FREQ performs the following chi-square tests for each two-way table: Pearson chi-square, continuity-adjusted chi-square for 2 ×2 tables, ...
Additionally, it is important to remember that the chi-square test can only be applied to numbers of progeny, not to proportions or percentages. You are now ready to perform statistical analysis ...